Driving mechanism.



No. 811,981. PATENTBD FEB. 6,1905 P. B. WILDMAN (in E. G. LOUMIQ.

DRIVING MECHANISM.

APPLICATION FILED AUG. 3, 1904.

2 SHEETS-SHEET 1.

lfweiaz wmy No. 811,981 MTBMED FEB. a, 1906.

F. B. WILDMAN & E. G/LOOMIS.

DRIVING MECHANISM. APPLICATION FILED AU'G13, 1904.

2 SHEETS-SHEET 2.

fzwegzrs t'll FRANK B. WILDMAN AND FVARTS Gr. LOOMIS, OF NORRISTOWN, PENN- I SYLVANTA, ASSIGNORS T MoMlCHAEL & WILDMAN MANUFACTUR- llNG "COL, OF NORRTSTUWN, PENNSYLVANIA.

HWIING MEOHANISIW.

provements in Driving Mechanism, of which the following is, a specification.

The invention consists in a. friction drive for knitting-machines and the like, and it is designed to insure against breakage of the machine in case of an obstruction or e);- traordinary resistance eing offered to the The invention permits the driving power to be disconnected by hand at will from the parts to be driven, or a suitable stop-motion mechanism may be employed to throw out of action the driving connection. Provision is madealso for, arresting the machine at once upon the driving connection being thrown out, and in doing this the friction connection -is relied on, working in con'unction with' a clutch which is connected wit one of the friction members and is adapted to engage a fixed clutch art to arrest the said clutch member and iction member, and thus provide a rigid friction-surface for. the moving friction member to Work against.

Other objects and features of our invention will appear hereinafter.

The invention consists in the features and combination and arrangement of parts hereinafter described, and particularly-pointed out in the claims.

in the drawings, Figure 1 is a front view of the invention, partlyin section. Fig. 2 is a sectional view taken longitudinally along the shaft with parts in elevation and with a ortion to the front of the shaft in section alhng the line y y of Fig. 1. Fig. 3 is a detail view, reduced, relating to the split ring for communicating the power from the drive-pulley to the parts to be turned. Figs. 4 and 5 are detail sectional and front views of the casing, associated with the friction collar or plate. Figs. 6 and 7 are details relating to the shifting-sleeve. Fig. 8 is a detail view of the hand-lever for operating the parts, showing its relation to the other parts.

in the drawings, 1 is the shaft to be driven, and 2 the drive-pulley loose thereon. The shaft is journaled in bearings 3 Al on the standard 5 and the bracket 6, for parts of the Specification of Letters Patent.

Application filed August 3, 19 04. ElarialNo- 219,397t

' cumferentially, as 'at 19, and receives a the case may be.

Patented Feb. 6, 1906.

machine frame. Within the drive pulley there is a split clutch-ring 7, arranged to bear on the inner side of the overhanging flange 8 of the pulley. This split ring has a central hub or collar 9, surrounding the hub 10 of the drive-pulley, and curved arms 9*, having a certain de ree of flexibility to connect this central hu with the peripheral or rim portion of the split ring at a point substantially diametrically'opposite the split in the ring. For operating the split rin toggle-links 11 are pivoted to parts 12, fixed on a rod13, said links being connected with other links 14, which in turn connect with the pins 15, moving in bosses 16, formed with or attached to the s lit ring on opposite sides of the point at whic 1 said ring is split or separated. These pins bear on screw-threaded pieces 17, adjustably held in the said bosses, and arranged to take the thrust of the pins 15. These pieces 17 are provided with openings 17*, adapted to receive a ke screw-threaded piece can be adjusted to set the parts of the splitring in proper relation to the pulley. Theresilient arms 9* are provided in order to secure an even contact of the said s lit ring throughout the inner side of the pn ey-flange, split ring the arms will be slightly flexed, so that contact of the rim take place throughout t side of the split ring.

For operating the toggle-links I employ e extentof the outer the rod 13, which is connected with a collar 18, arranged to both turn and slide on the shaft 1. This collar has a slot receiving the reduced end of the rod 13, and said rod is headed and shouldered, so that it will move in either direction With the collar when the latter is operated. The collar is grooved cirin or fork of an operatin -lever 20, said lever hei'rig pivoted at 22. hen the hand-lever is o erated, the collar will he slid along the s aft and will, togetherwith rod 13, move the toggledinks to spread the the same to assume its normal position, as

In the former case the pulle would drive the split ring-and collar around with it, while in the latter case the pulley would run free without driving the split ring. The friction driving members com rise a disk or block 23, fixed rigidly on the shaft by or wrench-pin by which the with the pulley will for upon spreading the l split ring or allow cesses ed to the left.

a pin 24, passing diametrically through the shaft and disk and being held in place b its threaded head 25 engaging a threade recess in the disk. Partly surrounding this disk is a friction-casing 25, which is secured to the split'clutch-ring by pins 26, fixed in said ring and projecting into openings 28 in the casing by screws 27, extending through the casing and through the pins 26. Against the inner face of the shaft friction disk or block 23 a frictionlate 29 bears, said plate being connected to t e casing 25 so as to form a part thereof by screws 30 passing through reformed in the main part of the casing, said recesses containing springs 30*, hearing on the heads of the screws so as to draw the parts of the friction-casing, or more properly speaking, the friction-plate into yielding contact with the face of the friction block ordisk. This frictional pressure may be adjusted by turning the screw-pins 30 and thus the parts may be set to transmit more or less 0' the power of the driving-pulley to the shaft to be driven.

The shifting sleeve or collar 18 haspins 31 projecting therefrom into openings in the friction-plate and into the openings 28 in the frictioncasing, and these, in conjunction with the pin or rod 13, serve to connect the collar, the friction plate and casing and the split rin being connected with the frictioncasing a l of these parts-i. e., the. split ring the casing,-the friction-plate, and the collar or sleeverotate as one body when driven by the pulley, and rotation is imparted to the shaft by frictional plate and friction-casing with the frictiondisk fixed on the shaft, and, as before stated,

the friction contact or pressure may be determined by adjusting the screws, as before stated, to compress or relax the springs 30*.

In order to disconnect the driving-pulley from the shaft, the collar or sleeve 18 is shift- This causes the rod 13 to be drawn upon, 0 crating the toggle-arms and relieving the sp it ring of pressure. This shifting of the sleeve or collar causes a clutch-j aw 33, carried thereby, to engage with its teeth the clutch-teeth 35 on a jaw fixed to a stationary part of the machine, as the bearing 3 of the frame 5. The clutch-jaws are secured to the parts carrying them. When the collar is shifted all the way to the left, the clutch members engage and at once the rotary movement of the collar, together with the friction members 29 and 25 and the split ring, is arrestedand the friction-casing and frictionplate now act as stationary friction-surfaces against which the faces of the friction block or disk act to stop the rotation of itself and of the shaft. it will thus be seen that the friction-surfaces are effective both in driving and stopping the machine, in the latter case acting as a brake.

contact of the friction-I a11,es1

For operating the sleeve or collar 18 lon itudinally of the shaft to set or release t e split ring we employ the lever 20, before mentioned. This has a handle to be operated by hand, and it is arranged to be operated automatically, for which purpose it is provided with a projection from, which is borne upon by a rod 37 slidably mounted in the frame and provided with notches or grooves 37 38 to be engaged by a tri member 39, forming a part of any suitab e stop-motion connections controlled by detector devices of any appropriate character. The rod 37 is pressed by a spring 40, and when released by the detent or trip mem leer 39 it will, under the power of the spring, move the lever 20 so as to move the collar or sleeve along the shaft, and thus allow the split ring to contract and withdraw itself from contact with the pulley, thus disconnecting the machine from the driving power. This same action will throw the clutch members into engagement, and the friction members will now act as brakingmeans, the disk on the shaft running against the frictionsur faces of the friction-plate.

It is desirable at times to the driving mechanism in an intermediate position so that the split ring will not be in engagement with the pulley, nor will the clutch members he in engagement, leaving the machine free to be turned by hand. In order to set the parts in this midway position, we provide a centering-pin 41, arranged in a socket in the frame and pressed bya spring $2. The pin has a conical end which enters a correspondin recess in the head 43 of a pin 44, held in a soc et of the hand-lever. By moving the hand-lever to a central or intermediate osition the centering-pin will engage the ever, and thus hold it with sufficient force to maintain the parts in intermediate position. Ordinary force, however, when applied to the hand-lever to move it will be sufficient to overcome the holding action of the centering-pin and permit the setting of the parts for the operation of the machine.

T e notch or roove 38 is provided in the sliding spring ro or in in order that the said pin may be held bac so as not to act upon the hand-lever, thus allowing said hand-lever to be freely operated in both directions at will. Notch or groove 38 in sliding spring rod or pin is used to allow of the shifting parts tobe shifted by the hand-lever either to an intermediate position or the extreme left position, thus holding the clutch out of engagement and allowing the machine to be turned by hand. Without the notch or groove 38 it would be impossible to hold the clutch out of engagement without first applyin the power to the shaft and startin the machine, which would be detrimental i an accident should happen, causing'some parts of the machine to 36, extending down there-' hold the parts of hllllqlltlll until proper adjustments are made,

l. in combination, Withthe shaft, a pulley, a friction member fined on the shaft, a second friction member in engagement therewith,

split-ring connection between the said second friction member and the pulley, With means for controlling the said splibriny; connection, and a clutch between the said second friction member and a fixed part of beanie, sub stantially as described.

in combination with the shalt and the pulley loose thereon, a friction member so cured to the shaft, a second briction member "With connection between the said second trio tion noember and the loose pulley adapted to be adjusted to connect with. or disconnect the said second friction member from the loose pulley, acollar arranged to slide on the shaft, a clutch member associated with the saidcollar, and a clutch'inernber lined to a frame part, means extending from the said collar to the adjustable connection between the second friction member and the pulley, the said collar, when moved one Way, setting the said adjustable connection to the second friction member and also to release the clutch, and When rnovedin the opposite direction throwin the clutch into operation and simultaneous y releasing thesdjnstable connection of the second friction inernber, substantially as described.

3, in combination with the shaft and the pulley loose thereon, a collar arranged to slide longitudinally on the shait, iriction connections between the shaft and the nlley, clutch. means between the shifting collar and a part of the frame and means for operating the col lar, the said collar when moved in one diree tion controlling the l'riction devices to drive the shaft from the pulley and who? moved in opposite direction engaging the clutch members, the said friction devices then actas braking means, substantially as described. i

the

become disarranged, (in an occasionoi this i Kind the machine must be moved by hand l, in combination, the pulley and its shaft, means ior connectiin the pulley With and dis connectingthe same irons the shaft, a slid loose thereon, iirictien devieesbetween the shaft and the pulley, the connection between the said friction devices and the pulley, a col-- lar slidable on the shalt with means for con trolling the said connection, a clutch controlled by the collar and rendered effective "when the collar is thrown back to release the driving" connection whereby the friction devices Will then act brake, the lever for op erating; the sliding collar and means for holding the said lever in central position, substantially described. i

d. in combination in a driving mechanism, a shaft and yenlley Witl. friction driving elements between clutch associated with said friction elements and a detachable connection between the said friction elements and the pulley, with means for controlling the parts whereby l n the pulley is detached from. the i rictio; elements, the clutch is thrown in tonialne the iriction elements act as a bralie, substantially as de scribed.

17. in combination member lined on the tied-plate, said casing fixed lriction member at two Witnesses. B. WHJDMAN. lt'ltl @LUUMIQ.

ll lmti "Witnesses Janene Liners, Avoids Felon,

herself We attire our signa. 

